Node2Shell: Node.js Brotli Remote Code Execution Vulnerability
A high-severity out-of-bounds write vulnerability in the Node.js Brotli decoder (Node2Shell) allows remote code execution when processing malformed compressed data.

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5 intel reports
Adversary c05d5254 uses the PoisonedRefresh rootkit to inject fileless PHP web shells into F5 BIG-IP APM memory via CVE-2025-53521 exploitation.
Cluster c05d5254 utilizes the PoisonedRefresh rootkit to inject fileless PHP web shells into F5 BIG-IP APM memory via CVE-2025-53521 exploitation.
UNC6508, a PRC-nexus threat actor, targets medical and military research institutions using INFINITERED malware to harvest credentials and exfiltrate data via manipulated compliance rules.
DirtyFrag is a sophisticated Linux kernel Local Privilege Escalation toolkit that uses page cache corruption and RxRPC/AF_ALG abuse to gain root access.
Unknown threat actors are exploiting CVE-2026-5426 in KnowledgeDeliver LMS using hardcoded machine keys to achieve RCE and deploy BLUEBEAM web shells and Cobalt Strike.